Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e1cc906fc0b333…

MALICIOUS

PDF

48.2 KB Created: 2020-10-04 11:36:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 036a1e1d72f8281a639509d47461a5f4 SHA-1: 667d4ea4ff149c19142a0e03fbf65832e69d91ee SHA-256: 07e1cc906fc0b3338ef4f6e4a70ba9b6e2b826faf1db12fe306aa2ecc3fece68
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/strik?keyword=elisabeth+k%25C3%25BCbler-ross+libros+gratis In PDF document text
    • http://files.whiaapi2012sesummit.com/uploads/1/3/1/3/131379194/7737346.pdfIn PDF document text
    • http://soziledog.bugtug.org/uploads/1/3/2/7/132712413/6803563.pdfIn PDF document text
    • http://files.dongshiart.com/uploads/1/3/2/7/132712514/d542c.pdfIn PDF document text
    • http://xenakaba.westashleyfitness.com/uploads/1/3/0/7/130776445/5329544.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/49f0f704-b3dd-49ad-b53b-efe84ee87f77/ruxekowijukejoragiwadulaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbf1e8a3-4cd8-4dd0-9d9e-a49b813cf1cd/25004544903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8149657-27e3-4e7e-b872-c6c00235760f/liligujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a37919b-c938-41d0-b8ef-306ba05313e4/63146759377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e28a7bec-2488-49e3-a659-9bf638ded719/43806437698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/pazisetumonadonexotalesaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6039/5673/files/lovifeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0657/6800/files/golf_league_tracker_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7904/files/gazusefifimatod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3698/2952/files/palibelezopinirane.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7014 4940 bytes
SHA-256: 62d1b0e0026693bf3846b3475b0ef3c750070cceeb59bb97e67c0aa331df89a8
font_01_sfnt_off00008100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8100 10452 bytes
SHA-256: 625b5c01beb5fe1132ac21e36258e28ec607a64f990a47d5d98e308927c56557
font_02_sfnt_off0000a3a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A3 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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